MySQL (IPA: [maɪ ˌ ɛskju ː ɛl]) - a free relational database management system. Development and support for MySQL performs Corporation Oracle, received the rights to the trademark together with the absorbed Sun Microsystems, which had previously acquired the Swedish company MySQL AB. The product is distributed as under the GNU General Public License, as well as under its own commercial license. In addition, developers are creating functionality commissioned licensed users. It is through this order almost the earliest versions appeared replication mechanism. 

MySQL is a solution for small and medium-sized applications. Included in the server WAMP, AppServ, LAMP and portable build servers Denver, XAMPP. Usually used as a MySQL server that is accessed by local or remote clients, but in the distribution includes a library of internal server that allows to include MySQL in standalone programs.